their和theirs的用法是什么?

their和theirs的用法是什么? their theirs our ours its 的用法 their 和 theirs 的用法各是什么?＿＿＿ bags is blue and ＿＿＿is red.A.Their our B.Theirs ours C.They our如何选呢？请说出理由来吧！ theirs 和their's 有什么区别?我是想知道theirs和their‘s的区别，不是their和theirs 英语their和theirs的区别 their和theirs有什么区别 theirs和their有什么区别? they ,their ,them ,theirs的意思 in theirs twenties 的用法 我觉的用their才对.是题出错了吗? their和theirs的区别有什么区别呢'在造个句 their和theirs的区别有什么区别呢'在造个句 their的名词性物主代词是theirs还是them? Our room is big,but theirs bigger than our.这里为什么用的是theirs不是their? themselves 和 their own 的区别和各自的用法 MY YOUR HIS HER ITS OUR YOUR THEIR MINE YOURS HIS HERS ITS OUR YOUR THEIRS分别各个单词的意思是什么 their和they怎么用法? Theirs错的原因是什么,Bill has two sister.【Theirs】 nane are Mary and Jane Theirs错的原因是什么,Bill has two sister.【Theirs】 nane are Mary and Jane